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A bigger pump (like the walbro 465) with a larger 10-12 gauge re-wire through the OEM FPC will help maintain a constant voltage at the 33, 66 and 100% pump duties, a FPR (like the Aeromotive 1000) to set the base pressure higher like 50 psi and you can increase the flow rate of any injector. If you do this you can decrease the IDC's for the given injector.

Now improve VE by means like the Killer B Holy Header and head work, PnP of the intake manifold, piston design...etc....and then you will make more power at lower rpm's and make more over all because you are wasting less power through parasitic loss!

A bigger pump (like the walbro 465) with a larger 10-12 gauge re-wire through the OEM FPC will help maintain a constant voltage at the 33, 66 and 100% pump duties, a FPR (like the Aeromotive 1000) to set the base pressure higher like 50 psi and you can increase the flow rate of any injector. If you do this you can decrease the IDC's for the given injector.

Now improve VE by means like the Killer B Holy Header and head work, PnP of the intake manifold, piston design...etc....and then you will make more power at lower rpm's and make more over all because you are wasting less power through parasitic loss!

You make more with less! Less is more Capish?

Ohh yes, all this is true! I thought what you were saying is 'Take a stage 2 STi, tune it, check IDCs. Now take that same car, slap on ONLY a header, retune, IDCs will drop'. I just dont see that happening

It would lower the IDCs at the same power output and it'll make more power and probably use less fuel doing it.

Correct, that goes back to what I was saying earlier. I think we're basically on the same page now. At a given power level, you'll use less with a good header. But the header has the potential to flow even more air if you'd like (or can), thus using more total fuel.

Correct, that goes back to what I was saying earlier. I think we're basically on the same page now. At a given power level, you'll use less with a good header. But the header has the potential to flow even more air if you'd like (or can), thus using more total fuel.

Yep! Explain yourself better next time and save us some time!! Haha....jk

"Safe" is a little bit of a loaded question to ask a tuner or anyone for that matter! I mean your car is not that old, not sure of the mileage but I'm sure you cared for it. I'm sure you know the rest!!

They are way ahead of the game. At first I figured they were the best choice for a 300-400whp car.... After tuning Manitou's XTi and seeing that even on a bigger turbo they work AWESOME I am sold. They spool faster, and make more power then the rest.

The rest of those brands are pretty much the same basic design that has been around for years

Even the Invidia race big tube header? That seems to be the closest in design to having a real merge between the two heads' primaries just like the KillerB. The other ones I fully agree are poorly designed, they just dump the one set of primaries at way too steep of an angle into the second set of primaries to be any good. The only one I could see being any competition to the KillerB is the Invidia big tube race, any expirience with that header? KillerB still seem superior in design to that? Thanks for your input.

Even the Invidia race big tube header? That seems to be the closest in design to having a real merge between the two heads' primaries just like the KillerB. The other ones I fully agree are poorly designed, they just dump the one set of primaries at way too steep of an angle into the second set of primaries to be any good. The only one I could see being any competition to the KillerB is the Invidia big tube race, any expirience with that header? KillerB still seem superior in design to that? Thanks for your input.

The use of 321 stainless steel of the Killer B header alone makes them better than other headers that (may) supply similar results. I have not seen any information on the Invidia big tube header though...

jesus lord the price on this thing....what if it cracks....congratz on the power

They are not cheap especially in Canada but they are worth every penny! They produce quick spool and support big power!!

I've cracked other el headers and blown out flex joints in Grimm x and up pipes which they warranted. These are very burly and made from 321 SS so you won't crack them. I'm sure they would warranty them if for some reason you did.